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BR9904769A - Operation process of a digital signal system, and, system for providing a digital baseband signal - Google Patents

Operation process of a digital signal system, and, system for providing a digital baseband signal

Info

Publication number
BR9904769A
BR9904769A BR9904769-1A BR9904769A BR9904769A BR 9904769 A BR9904769 A BR 9904769A BR 9904769 A BR9904769 A BR 9904769A BR 9904769 A BR9904769 A BR 9904769A
Authority
BR
Brazil
Prior art keywords
signal
digital
television receiver
degradations
providing
Prior art date
Application number
BR9904769-1A
Other languages
Portuguese (pt)
Inventor
Richard W Citta
Raymond C Hauge
Paul Adam Snopko
Original Assignee
Zenith Electronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zenith Electronics Corp filed Critical Zenith Electronics Corp
Publication of BR9904769A publication Critical patent/BR9904769A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H04N5/40—Modulation circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Picture Signal Circuits (AREA)

Abstract

''PROCESSO DE OPERAçãO DE UM SISTEMA DE SINAL DIGITAL, E, SISTEMA PARA FORNECIMENTO DE UM SINAL DE BANDA BASE DIGITAL''. Um codificador - modular para acoplar um sinal de televisão de banda base digital a um receptor de televisão digital VSB que inclui filtros, circuito de equalização e circuito de correção de erro dianteiro para corrigir degradações de sinal que estão abaixo de um lado limiar. O codificador - modulador processa o sinal de banda base para uma transmissão de baixa potência em um canal RF com características de banda passante menos do que o nominal. Um cabo coaxial ou outra ligação de comunicação de baixo ruído diretamente conecta o sinal de RF do receptor de televisão. Quaisquer erros ou degradações de sinal no sinal transmitido que estão abaixo do predeterminado limiar são corrigidos pelos filtros e circuito de equalização construídos no receptor de televisão digital VSB.'' OPERATING PROCESS OF A DIGITAL SIGNAL SYSTEM, AND, SYSTEM FOR SUPPLYING A DIGITAL BASE BAND SIGNAL ''. A modular encoder for coupling a digital baseband television signal to a VSB digital television receiver that includes filters, equalization circuit and front error correction circuit to correct signal degradations that are below a threshold side. The modulator encoder processes the baseband signal for low power transmission over an RF channel with less than nominal passband characteristics. A coaxial cable or other low-noise communication link directly connects the television receiver's RF signal. Any errors or signal degradations in the transmitted signal that are below the predetermined threshold are corrected by the filters and equalization circuit built in the VSB digital television receiver.

BR9904769-1A 1998-02-06 1999-01-06 Operation process of a digital signal system, and, system for providing a digital baseband signal BR9904769A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2027498A 1998-02-06 1998-02-06
PCT/US1999/000130 WO1999040721A1 (en) 1998-02-06 1999-01-06 Vsb encoder and rf modulator for digital television receiver

Publications (1)

Publication Number Publication Date
BR9904769A true BR9904769A (en) 2000-03-08

Family

ID=21797699

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9904769-1A BR9904769A (en) 1998-02-06 1999-01-06 Operation process of a digital signal system, and, system for providing a digital baseband signal

Country Status (11)

Country Link
US (1) US6559898B1 (en)
JP (1) JP2001519993A (en)
KR (1) KR100470737B1 (en)
CN (1) CN1148958C (en)
AR (1) AR014501A1 (en)
AU (1) AU2026499A (en)
BR (1) BR9904769A (en)
CA (1) CA2280161C (en)
ID (1) ID22693A (en)
TW (1) TW416219B (en)
WO (1) WO1999040721A1 (en)

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US7106388B2 (en) * 1999-12-15 2006-09-12 Broadcom Corporation Digital IF demodulator for video applications
KR100386572B1 (en) * 1999-12-24 2003-06-02 엘지전자 주식회사 System for Digital TV translator
JP4517436B2 (en) * 2000-02-09 2010-08-04 ソニー株式会社 RECEPTION SYSTEM, RECEPTION DEVICE, AND RECEPTION SYSTEM CONTROL METHOD
US20010052128A1 (en) * 2000-03-03 2001-12-13 Sadaaki Shinjo Signal converter
US6724439B1 (en) * 2000-08-04 2004-04-20 Zenith Electronics Corporation Low cost VSB encoder and RF modulator for supplying a substantially 6 MHZ VSB signal to digital television receiver
KR100424496B1 (en) * 2000-08-31 2004-03-26 삼성전자주식회사 Method and apparatus for controlling equalizer using sync signal in digital vestigial sideband system
US7352411B2 (en) 2000-12-15 2008-04-01 Broadcom Corporation Digital IF demodulator
US6919930B2 (en) * 2001-04-06 2005-07-19 Zenith Electronics Corporation Digital television signal translator
DE10163798A1 (en) * 2001-12-22 2003-07-03 Philips Intellectual Property TV signal receiver with universal output for various surface wave filters
US7847864B1 (en) * 2002-03-01 2010-12-07 Broadcom Corporation All digital radio frequency modulator
US7489362B2 (en) 2003-03-04 2009-02-10 Broadcom Corporation Television functionality on a chip
KR100561472B1 (en) * 2003-10-21 2006-03-16 삼성전자주식회사 Apparatus and method for comprehensive transmission and reception of multiple signals
US20070076819A1 (en) * 2005-09-30 2007-04-05 Axcera, Llc 8VSB bandwidth-limited peak filter
GB0614543D0 (en) * 2006-07-21 2006-08-30 Vodafone Plc RF Distribution
US8139957B2 (en) * 2008-06-24 2012-03-20 General Instrument Corporation High sensitivity optical receiver employing a high gain amplifier and an equalizing circuit
US10171200B2 (en) * 2013-08-27 2019-01-01 Zte Corporation Optical communication using super-nyquist signals
KR102118976B1 (en) 2018-08-24 2020-06-04 주식회사 비즈닉스 Showcase for contact lenses and method for displaying contact lenses with it
KR20200074041A (en) 2018-12-14 2020-06-24 장세진 Showcase for contact lenses and method for displaying contact lenses with it
KR20200074042A (en) 2018-12-14 2020-06-24 장세진 Showcase system for contact lenses and method for controlling for displaying contact lenses with the same
KR20220015200A (en) 2020-07-30 2022-02-08 주식회사 비즈닉스 Contact-lense virtual fitting system and method for genetrating virtural fitting image of selected contact-lense with the system
KR20220015202A (en) 2020-07-30 2022-02-08 주식회사 비즈닉스 Contact-lense cube, contact-lense virtual fitting system with the same and method for genetrating virtural fitting image of selected contact-lense with the system
KR20220015201A (en) 2020-07-30 2022-02-08 주식회사 비즈닉스 Contact dispalying stand, contact-lense virtual fitting system with the same and method for genetrating virtural fitting image of selected contact-lense with the system

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WO1994019892A1 (en) * 1993-02-17 1994-09-01 Motorola Inc. Multiple-modulation communication system
US5602595A (en) 1993-12-29 1997-02-11 Zenith Electronics Corporation ATV/MPEG sync system
US5602602A (en) * 1994-02-10 1997-02-11 Philips Electronics North America Corporation Method and apparatus for combating co-channel NTSC interference for digital TV transmission having a simplified rejection filter
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Also Published As

Publication number Publication date
CN1256044A (en) 2000-06-07
AR014501A1 (en) 2001-02-28
KR20010005743A (en) 2001-01-15
JP2001519993A (en) 2001-10-23
CA2280161C (en) 2004-10-19
AU2026499A (en) 1999-08-23
TW416219B (en) 2000-12-21
KR100470737B1 (en) 2005-03-07
ID22693A (en) 1999-12-09
US6559898B1 (en) 2003-05-06
CA2280161A1 (en) 1999-08-12
WO1999040721A1 (en) 1999-08-12
CN1148958C (en) 2004-05-05
HK1027701A1 (en) 2001-01-19

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 12A ANUIDADE

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2082 DE 30/11/2010.